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Question about STM32 CubeMX

Question asked by naughty_mark on May 5, 2014
Latest reply on Jun 19, 2014 by STM32Cube-T
Hi guys,

I just used STM32 CubeMx to generate a brief project frame as I configed. I looked at the files that Cube includes to my project. For example, it has stm32f4xx_HAL_can.c, and in the stm32F429I discovery board support webpage, ST gives some example code about peripherals, in its peripheral driver, it has stm32f4xx_can.c. 
I compared with those two files and honestly I can not find something actually different. My question is are they same? why ST doesn't use same driver file, any particular reason? And I also check HAL definition, I still can not quite understand it, anyone could give me a brief idea or useful link?

Thanks for your help.